Harry should be able only to bring back those persons who died since Grave Peril, and haven’t been adversely affected by his decisions in that book.
They also have to have a reason to come back with Harry. Morgan is the logical candidate, his Harry may be a destroyer, the world suffered at least two apocalypses Harry prevented, the Red Court are still a menace, he may realise his world is doomed to either fall to the Outsiders or be snuffed out by the White God to prevent it falling to them. Journal indicates he knew far more than he was letting on to Harry, and it would be a chance to redeem his promise to Margaret.
Besides Morgan turning up alive and working with the Wizard of Chicago would give the White Council collective anal conjouritis